ABS Variable Diameter Plastic Ventilation Pipe Reducing Joint Round duct reducer from 100 mm to 150 mm. One-piece molded PVC reducer with good sealing and wear resistance. Smooth surface for easy installation on various vent pipes. Ideal for clothes dryers, bathroom fans, kitchen extractor fans, hydroponics systems, and inline extract fans. This reducer is suitable for use in whole-house ventilation systems, passive chimney vents, positive air inlets, air conditioning systems, and heat recovery systems. Made from ABS material for corrosion resistance and high rigidity. Leak-proof and explosion-proof design. Compatible with rigid plastic duct systems—seal with putty or tape. Compatible with flexible duct systems—secure with hose clamps. Made from high-quality ABS material, resistant to corrosion and deformation. Optimized internal design with smooth interior surface to minimize airflow resistance. Seamless construction ensures excellent sealing performance. Suitable for both indoor and outdoor applications. Installation instructions: 1. Connect the duct pipe to the reducer. 2. Secure the joint with aluminum foil tape. 3. Apply a hose clamp and tighten with a screwdriver.